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(11) | EP 2 020 819 A1 |
(12) | EUROPEAN PATENT APPLICATION |
published in accordance with Art. 153(4) EPC |
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(54) | METHOD FOR IMPROVING PERFORMANCE OF MOBILE BROADBAND WIRELESS ACCESS SYSTEM |
(57) A method for improving the performance of mobile broadband wireless access system
is disclosed in the present invention. The method comprises the follow steps: first,
a paging controller controls base stations to transmit MOB-PAG-ADV message to mobile
stations; the mobile stations respond to the paging controller through the base station
which responds to the mobile stations; then, the paging controller transmits paging
notice message to inform the base stations in the paging group which do not respond
to the mobile stations to stop transmitting MOB-PAG-ADV message; last, the base stations
in the paging group immediately stop transmitting MOB-PAG-ADV as to the mobile station
and delete the corresponding data after they receive the paging notice message sent
by the paging controller. By use of the method of the present invention, the processing
and the storage cost of the base station are not evidently increased, legal-users'
paging failures due to illegal access message can be avoided, and thus the occupation
of wireless resources and system resources of the network can be effectively reduced. |
Technical Field
Background of the invention
Summary of the Invention
Step 1, a paging controller controls base stations to send MOB-PAG-ADV message to a mobile station; the mobile station responds to the paging controller through the base station which responds to the mobile station;
Step 2, the paging controller sends a paging notice message to inform those base stations in the paging group which do not respond to the mobile station to stop sending MOB-PAG-ADV message;
Step 3, the base stations in the paging group instantly stop sending the wireless MOB-PAG-ADV message as to the mobile station and delete corresponding data after they receive the paging notice message sent by the paging controller.
Mode 1, step 1 further includes the following steps:
Step a, when the network needs to start up a paging process, the paging controller to which the mobile station in idle state belongs constructs a paging notice message which indicates the purpose of the paging and indicates to start the paging; the paging controller sends the paging notice message to all base stations in the paging group related to the mobile station;
Step b, after the base station receive the paging notice message from the paging controller, it constructs and sends the MOB-PAG-ADV message to the mobile station;
Step c, the mobile station sends RNG-REQ message to the base station according to the instruction in the MOB-PAG-ADV message;
Step d, if the base station receiving the RNG-REQ message has validity check information, it performs validity check;
Step e, if the validity check is passed, the base station receiving the RNG-REQ message informs the paging controller which manages the mobile station that the access response from the mobile station has been received successfully;
If the validity check is not passed, the base station receiving the RNG-REQ message discards this RNG-REQ message, continues to send MOB-PAG-ADV message and waits for response from the mobile station; or the base station stops sending MOB-PAG-ADV message and immediately starts a complete process of re-access to the network.
Step a', when the network needs to start up a paging process, the paging controller to which the mobile station in idle mode belongs constructs a paging notice message, which indicates the purpose of the paging and indicates to start the paging; the paging controller sends the paging notice message to all base stations in the paging group related to the mobile station;
Step b', after the base station receives the paging notice message from the paging controller, it constructs and sends MOB-PAG-ADV message to the mobile station;
Step c', the mobile station sends a RNG-REQ message to the base station according to the instruction in the MOB-PAG-ADV message;
Step d' if the base station receiving the RNG-REQ message has no validity check information, it obtains the validity check information first and performs validity check;
Step e', if the validity check is passed, the base station receiving the RNG-REQ message informs the paging controller which manages the mobile station that the access response from the mobile station has been received successfully;
Step a", when the network needs to start up a paging process, the paging controller to which the mobile station in idle mode belongs constructs a paging notice message which indicates the purpose of the paging and indicates to start the paging; the paging controller sends the paging notice message to all base stations in the paging group related to the mobile station;
Step b", after the base station receiving the paging notice message from the paging controller, it constructs and sends a MOB-PAG-ADV message to the mobile station;
Step c", the mobile station sends a RNG-REQ message to the base stations according to the instruction in the MOB-PAG-ADV message;
Step d", the base station receiving the RNG-REQ message informs the paging controller which manages the mobile station that the access response from the mobile station has been received successfully.
Brief Description of the Drawings
Fig.1 is a schematic diagram of the paging function logic entity formation in 802.16e system;
Fig.2 is a schematic diagram of networking in 802.16e system;
Fig.3 is a schematic diagram of the flow of position updating initiated by the network in accordance with the first preferred embodiment of the present invention;
Fig.4 is a schematic diagram of the flow of position updating initiated by the network in accordance with the second preferred embodiment of the present invention;
Fig.5 is a schematic diagram of the flow of position updating initiated by the network in accordance with the third preferred embodiment of the present invention;
Fig.6 is a schematic diagram of the flow of the mobile station exiting the idle mode in accordance with the fourth preferred embodiment of the present invention;
Fig.7 is a schematic diagram of the flow of the mobile station exiting the idle mode in accordance with the fifth preferred embodiment of the present invention;
Fig.8 is a schematic diagram of the flow of the mobile station exiting the idle mode in accordance with the sixth preferred embodiment of the present invention.
Description of the Preferred Embodiments
The second preferred embodiment
The third preferred embodiment
(1) one mobile station is in idle mode and its position has not been updated for a period of time; the paging controller managing the mobile station constructs and sends a paging notice message (updating the position and starting the paging) to all base stations in the paging group to which the mobile station belongs, requesting the mobile station to update its position.
(2) After receiving the paging notice message, the base station determines that a paging needs to be initiated, then the base station constructs a MOB-PAG-ADV according to IEEE802.16e and send it in the air.
(3) the mobile station receives the MOB-PAG-ADV and is informed that it needs to update the position according to the instruction in the MOB-PAG-ADV, then it sends RNG-REQ message to the base station.
(4)-(6) a base station BS1 receives the RNG-REQ message from the mobile station; the message needs to be checked but there is no validity check information, then the BS1 obtains the validity check information from the verifier and performs the validity check.
(7) If the validity check is passed, BS1 notifies, in the position update acknowledgement
message, the paging controller which manages the mobile station that the access response
from the mobile station has been received successfully. Meanwhile, other base stations
not receiving the RNG-REQ access message resend the MOB-PAG-ADV including the information
of the mobile station.
If the validity check is not passed, BS1 discards the RNG-REQ message and continues
to send the MOB-PAG-ADV in the air and waits for response from the mobile station;
or BS1 can also stop sending the MOB-PAG-ADV and instantly start a complete process
of re-access to the network.
(8) After the paging controller is notified that BS 1 has received access response
from the mobile station, it needs to reconstruct and send a paging notice message
which directs all base stations in the paging group associated with the mobile station
to stop sending the MOB-PAG-ADV.
After all the base stations in the paging group receive the paging notice message
from the paging controller requesting stopping paging broadcasting in the air, the
base stations instantly stop sending the MOB-PAG-ADV in the air as to the mobile station
and delete the corresponding data.
(9) meanwhile, BS1 sends RNG-RSP to the mobile station, and the process of updating the position is completed.
The fourth preferred embodiment
(1) There is data in application layer needing to be sent to a mobile station in idle mode; the home agent sends the data to the access gateway to which the mobile station currently belongs.
(2) The gateway requests the related information of the mobile station from the paging controller to which the mobile station belongs.
(3)-(4) The paging controller returns some information of the mobile station to the gateway, and sends a paging notice message to all the base stations in the paging group to which the mobile station belongs, requesting to start paging broadcasting.
(5) After the base station receives the paging notice message, it sends air interface MOV-PAG-ADV.
(6) The mobile station acquires from the indication in the MOV-PAG-ADV that there is data paging it, then the mobile station sends RNG-REQ message to the base station.
(7)-(9) The base station receives the RNG-REQ message, obtains validity check information through verifier to perform message check.
(10) If the validity check is passed, BS1 sends a paging response message to inform
the paging controller of the mobile station that the access response from the mobile
station has been received successfully. Meanwhile, other base stations not receiving
the RNG-REQ access message resend the MOB-PAG-ADV including the information of the
mobile station.
If the validity check is not passed, the BS1 discards the RNG-REQ message and continues
to send the MOB-PAG-ADV in the air and waits for response from the mobile station;
or BS1 can also stop sending the MOB-PAG-ADV and instantly start a complete process
of re-access to the network.
(11) After the paging controller receives the message from the BS1 and is informed
that BS1 has received the access response from the mobile station, the paging controller
needs to reconstruct and send a paging notice message which directs all the base stations
in the paging group associated with the mobile station to stop sending the MOB-PAG-ADV.
After all the base stations in the paging group receive the paging notice message
from the paging controller which requests to stop paging broadcasting in the air,
they instantly stop sending the MOB-PAG-ADV in the air as to the mobile station and
delete the corresponding data.
(12) the subsequent flow of exiting the idle mode continues according to the NWG specification, which is not further described here.
The fifth preferred embodiment
(1) There is data in the application layer to be sent to a mobile station in idle mode; the home agent sends the data to the access gateway to which the mobile station currently belongs.
(2) The gateway requests the related information of the mobile station from the paging controller to which the mobile station belongs.
(3)-(4) The paging controller returns some information of the mobile station to the gateway, and sends a paging notice message to all the base stations in the paging group to which the mobile station belongs, requesting to start paging broadcasting.
(5) After the base station receives the paging notice message, it sends air interface MOB-PAG-ADV.
(6) The mobile station acquires from the indication in the MOB-PAG-ADV that there is data paging it, then the mobile station sends RNG-REQ message to the base station.
(7)-(9) The base station receives the RNG-REQ message and obtains validity check information from the verifier to perform the message check.
(10) If the validity check is passed, BS1 begins the process of establishing a data
channel.
If the validity check is not passed, BS1 discards the RNG-REQ message and continues
to send the MOB-PAG-ADV in the air and waits for response from the mobile station;
or BS1 can also stop sending the MOB-PAG-ADV and instantly start a complete process
of re-access to the network.
(11) After the data channel is established, BS1 sends RNG-RSP message to the mobile station.
(12) BS1 notifies the paging controller which manages the mobile station through deleting mobile station information message that the access response from the mobile station has been received, and the mobile station completes the network re-access. Meanwhile, other base stations not receiving the RNG-REQ message still resend the MOB-PAG-ADV including the information of the mobile station.
(13) After the paging controller receives the message from BS1 and is informed that BS1 has received the access response from the mobile station, it needs to reconstruct and send a paging notice message which directs all the base stations in the paging group associated with the mobile station to stop sending the MOB-PAG-ADV
The sixth preferred embodiment
(1) There is data in the application layer to be sent to a mobile station in idle mode, and the home agent sends the data to the access gateway to which the mobile station currently belongs.
(2) The gateway requests the related information of the mobile station from the paging controller to which the mobile station belongs.
(3)-(4) The paging controller returns some information of the mobile station to the gateway, and sends a paging notice message to all the base stations in the paging group to which the mobile station belongs, requesting to start paging broadcasting.
(5) After the base station receives the paging notice message, it sends air interface MOV-PAG-ADV.
(6) The mobile station acquires from the indication in the MOV-PAG-ADV that there is data paging it, then the mobile station sends RNG-REQ message to the base station.
(7) BS1 receives the RNG-REQ message and notifies, in mobile station information request message, the paging controller which manages the mobile station that the access response from the mobile station has been received successfully, and the mobile station has completed the network re-access. Meanwhile, other base stations not receiving the RNG-REQ message resend the MOB-PAG-ADV including the information of the mobile station.
(8) the paging controller receives the message from BS1, responds with the response
message of mobile station information , and reconstructs and sends the paging notice
message which directs all base stations in the paging group associated with the mobile
station to stop sending the MOB-PAG-ADV.
All the base stations in the paging group receives the paging notice message from
the paging controller which requests to stop paging broadcasting in air, then the
base stations instantly stop sending the MOB-PAG-ADV in the air as to the mobile station
and delete the corresponding data.
(9) the subsequent flow of exiting the idle mode continues according to the NWG specification, which is not further described here .
Step 1, a paging controller controlling a base station to send MOB-PAG-ADV message to a mobile station; the mobile station responding to the paging controller through the base station which responses to the mobile station;
Step 2, the paging controller sending a paging notice message to inform those base stations in paging group that do not respond to the mobile station to stop sending the MOB-PAG-ADV message;
Step 3, after receiving the paging notice message sent by the paging controller, the base station in the paging group instantly stopping sending the MOB-PAG-ADV message as to the mobile station and deleting corresponding data.
Step a, when a network needing to start up a paging process, the paging controller to which the mobile station in idle mode belongs constructing the paging notice message, which indicates purpose of the paging and starting the paging, the paging controller sending the paging notice message to all the base stations in the paging group associated with the mobile station;
Step b, after receiving the paging notice message from the paging controller, the base station constructing and sending the MOB-PAG-ADV message to the mobile station;
Step c, the mobile station sending a RNG-REQ message to the base station according to the instruction in the MOB-PAG-ADV message;
Step d, if the base station which has received the RNG-REQ message has validity check information, performing validity check;
Step e, if the validity check is passed, the base station which has received the RNG-REQ message notifying the paging controller which manages the mobile station that an access response from the mobile station has been received successfully;
If the validity check is not passed, the base station which has received the RNG-REQ message discarding the RNG-REQ message, continuing to send the MOB-PAG-ADV message and waiting for the response from the mobile station; or the base station stopping sending the MOB-PAG-ADV message and immediately starting a complete process of re-access to the network.Step a', when a network needing to start up a paging process, the paging controller to which the mobile stations in idle mode belong constructing a paging notice message, which indicates purpose of the paging and starting the paging, and the paging controller sending the paging notice message to all the base stations in the paging group associated with the mobile station;
Step b', after receiving the paging notice message from the paging controller, the base station constructing and sending the MOB-PAG-ADV message to the mobile station;
Step c', the mobile station sending a RNG-REQ message to the base station according to the instruction in the MOB-PAG-ADV message;
Step d' if the base station which has received the RNG-REQ message has no validity check information, the base station obtaining validity check information and then performing the validity check;
Step e', if the validity check is passed, the base station which has received the RNG-REQ message notifying the paging controller which manages the mobile station that the access response from the mobile station has been received successfully;
if the validity check is not passed, the base station which has received the RNG-REQ message discarding the RNG-REQ message, continuing to send the MOB-PAG-ADV message and waiting for the response from the mobile station, or the base station stopping sending the MOB-PAG-ADV message and immediately starting a complete process of re-access to the network.Step a", when a network needs to start up a paging process, the paging controller to which the mobile station in idle mode belongs constructing a paging notice message which indicates purpose of the paging and starting the paging, and the paging controller sending the paging notice message to all the base stations in the paging group associated with the mobile station;
Step b", after receiving the paging notice message from the paging controller, the base station constructing and sending a MOB-PAG-ADV message to the mobile station;
Step c", the mobile station sending a RNG-REQ message to the base station according to the instruction in the MOB-PAG-ADV message;
Step d", the base station which has received the RNG-REQ message notifying the paging controller which manages the mobile station that the access response from the mobile station has been received successfully.